Pumice forms from globules of lava that are launched into the air. Traveling through the air in such a fashion tends to cool hot objects fairly quickly.
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Pumice cools relatively fast compared to other volcanic rocks due to its high porosity and low thermal conductivity. The rapid cooling results in the formation of its characteristic lightweight and porous texture.
Pumice is a vesicular igneous rock that has cooled very quickly from molten rock.
Because it is very hot in the mantel and the atmosphere is very cold compared to it.
Pumice and tuff are the product of violent eruptions. Rhyolite is often, but not always produced by violent eruptions, but it can also form from slow, extrusive eruptions.
Intrusive rock cools slowly from magma underground, allowing large mineral crystals to form. This slow cooling process is why intrusive rocks, such as granite and diorite, have a coarse-grained texture.
it depends on if it is intrusive or extrusive (intrusive is below the earth and extrusive is at or above the earth) intrusive has a bigger crystal because it takes time to cool down.
Gabbro typically cools slowly beneath the Earth's surface, allowing large mineral crystals to form. This slow cooling process results in a coarse-grained texture in gabbro rocks.
how did pumice get here